74HCT4040D,652

Counter Dividers Overview

The Nexperia 74HCT4040D,652 is a 12-stage binary ripple counter housed in an SOIC-16 (SOT109-1) package. It features a clock input (CP), an asynchronous master reset (MR), and twelve parallel outputs (Q0 to Q11). The device operates on the HIGH-to-LOW transition of CP and clears all stages upon a HIGH signal at MR. Designed for HCT logic levels, it supports a supply voltage range of 4.5 V to 5.5 V and functions within an ambient temperature range of -40 °C to +125 °C.

Counter Dividers Feature Summary

• Features an overriding asynchronous master reset input that forces all outputs LOW independent of the clock state.
• Each counter stage utilizes a static toggle flip-flop architecture for reliable counting operations.
• Includes input clamp diodes to allow interfacing with voltages exceeding VCC using current limiting resistors.

Counter Dividers Applications

• Frequency dividing circuits
• Time delay circuits
• Control counters

Counter Dividers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package variant and temperature rating. Ensure compatibility with system voltage requirements, as the HCT series requires a 4.5 V to 5.5 V supply range distinct from HC variants. Confirm lead times and availability directly with authorized distributors or Nexperia sales offices.

Counter Dividers Selection Notes

Select this component when a 12-bit binary count sequence is required with TTL-compatible input thresholds. The HCT logic level ensures direct interface with standard TTL devices without additional level shifting. Consider the SOIC-16 package for surface-mount assembly needs where space constraints align with its physical dimensions.

Counter Dividers Part Context

This part belongs to the 74HCT4040 family of 12-stage binary ripple counters manufactured by Nexperia. It shares functional characteristics with the 74HC4040 but differs in input voltage thresholds to support TTL logic levels. The D,652 designation specifically identifies the SOIC-16 plastic small outline package variant.

Counter Dividers Replacement Considerations

Check for 74HC4040D variants if CMOS input levels are acceptable, noting the difference in supply voltage ranges. Verify pinout compatibility with other 16-pin counter ICs before substitution.

Counter Dividers FAQ

How does the master reset input affect the counter operation?

A HIGH signal on the master reset (MR) input overrides the clock input and immediately clears all counter stages, forcing all outputs (Q0 to Q11) to a LOW state.

What triggers the counter to advance?

The counter advances on the HIGH-to-LOW transition of the clock pulse (CP) input.